Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
242613
| DE | New Castle | Noxontown Lake, downstream from Wiggins Mill | 1929 |
02040205
| Brandywine-Christina | established |
278647
| MD | Baltimore | Baltimore County non-specific | 1929 |
02060003
| Gunpowder-Patapsco | established |
278648
| MD | Carroll | Carroll County | 1929 |
02070009
| Monocacy | established |
278651
| MD | Cecil | Cecil County | 1929 |
02060002
| Chester-Sassafras | established |
278650
| MD | Frederick | Frederick County | 1929 |
02070000
| Potomac | established |
278652
| MD | Montgomery | Montgomery County | 1929 |
02000000
| Mid Atlantic Region | established |
278653
| MD | Prince Georges | Prince George's County | 1929 |
02000000
| Mid-Atlantic | established |
278649
| MD | Washington | Washington County | 1929 |
02070000
| Potomac | established |
37294
| ND | Adams | Cedar River (Creek?) tributary, Cannonball River, between Mott and Hettinger | 1929 |
10130205
| Cedar | established |
37293
| ND | Stark | Heart River about 10 miles south of Richardton | 1929 |
10130202
| Upper Heart | established |